Electrical Machines Which of the following bearings and their uses are correct neither 1 nor 2 both A and B ball bearings → small machines roller bearings → large machines neither 1 nor 2 both A and B ball bearings → small machines roller bearings → large machines ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Mechanical energy is supplied to DC generator at the rate of 4200 J / s. The generator delivers 32.2 Amp at 120 V. What is the percentage efficiency of the generator? 205 V. 210 V. 212 V. 201.02 V. 205 V. 210 V. 212 V. 201.02 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Torque developed in the rotor is either of these directly proportional to slip not dependent on the slip inversely proportional to slip either of these directly proportional to slip not dependent on the slip inversely proportional to slip ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor must started on no load because it would Fail to start without load. Not develop starting torque. Draw more current without producing sufficient torque. Run at dangerously high speed. Fail to start without load. Not develop starting torque. Draw more current without producing sufficient torque. Run at dangerously high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 2 pole synchronous machine is operating at 3000 rpm. Find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm) ? ωe = 2*ωm ωe = ωm ωe = 4*ωm ωe = 1/2*ωm ωe = 2*ωm ωe = ωm ωe = 4*ωm ωe = 1/2*ωm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Speed of DC motor can be controlled by varying its flux oer pole. resistance of armature culture. applied voltage. all of these. its flux oer pole. resistance of armature culture. applied voltage. all of these. ANSWER DOWNLOAD EXAMIANS APP
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